Hello. I have an 12 year old app that still has some objective-c code in it. I have a place where i have a flip animation between 2 view controllers that looks like this: [UIView transitionFromView:origView toView:newViewController.view duration:0.5 options:UIViewAnimationOptionTransitionFlipFromRight completion:nil]; It has looked like this since 2012 at least. In our production release, it works prior to 26.1, but in 26.1 and 26.2, the flip is off-center and looks weird. it's like both edges flip the same way. It's a little bit hard to explain. If seen at least 2 other app store apps that i have installed behave this way too, from 26.1 and onwards. Anyone else seen this? Is there anything that can be done about it? Thankful for thoughts.

Device: iPhone 11 iOS Version: 17.2.1 Frameworks: UIKit, Auto Layout App Behavior: App supports Arabic (RTL). User can switch language in-app. When language is switched, the app sets UIView.appearance().semanticContentAttribute and fully rebuilds the window’s rootViewController. Problem Summary I update the global semantic direction only when the user explicitly switches language inside the app — e.g.: // Only run when user switches language inside the app UIView.appearance().semanticContentAttribute = .forceRightToLeft // or .forceLeftToRight // then rebuild the window's rootViewController I do not change UIView.appearance().semanticContentAttribute during navigation transitions. Despite that, after switching the language (and rebuilding the root), the app sometimes crashes during a subsequent UINavigationController push/pop animation. The crash appears to be caused by UIKit’s Auto Layout engine removing or updating directional constraints while a navigation transition is running. Crash Log (most relevant portion) Crashed: com.apple.main-thread 0 CoreAutoLayout 0x1372c -[NSISEngine positiveErrorVarForBrokenConstraintWithMarker:errorVar:] + 212 1 CoreAutoLayout 0x121d4 -[NSISEngine removeConstraintWithMarker:] + 1028 2 CoreAutoLayout 0x11d78 -[NSLayoutConstraint _removeFromEngine:] + 148 3 UIKitCore 0x124ba9c __58-[UIView _updateDirectionalConstraintsIfNeededWasFlipped:]_block_invoke_2 + 56 4 UIKitCore 0x484d4 ___UIViewEnumerateLayoutConstraintsAndAdjustForSelectedLayoutVariables_block_invoke + 296 5 UIKitCore 0x4801c -[UIView(AdditionalLayoutSupport) _withUnsatisfiableConstraintsLoggingSuspendedIfEngineDelegateExists:] + 112 6 UIKitCore 0x60830 -[UIView _updateDirectionalConstraintsIfNeededWasFlipped:] + 356 7 UIKitCore 0x60494 -[UIView setSemanticContentAttribute:] + 148 8 CoreFoundation 0x31794 __invoking___ + 148 9 CoreFoundation 0xe6360 -[NSInvocation invokeUsingIMP:] + 332 10 UIKitCore 0x1d93ec __workaround10030904InvokeWithTarget_block_invoke + 68 11 UIKitCore 0x250ec +[UIView _performSystemAppearanceModifications:] + 72 12 UIKitCore 0x3f008 applyInvocationsToTarget + 1004 13 UIKitCore 0x3dcd4 +[_UIAppearance _applyInvocationsTo:window:matchingSelector:onlySystemInvocations:] + 1180 14 UIKitCore 0x3d744 __88-[UIView(Internal) _performUpdatesForPossibleChangesOfIdiom:orScreen:traverseHierarchy:]_block_invoke + 68 15 UIKitCore 0x3d6c4 -[UIView _performUpdatesForPossibleChangesOfIdiom:orScreen:traverseHierarchy:] + 216 16 UIKitCore 0x3d5a0 -[UIView _didChangeFromIdiomOnScreen:traverseHierarchy:] + 112 17 UIKitCore 0x11644 -[UIView(Internal) _didMoveFromWindow:toWindow:] + 1220 18 UIKitCore 0x1142c -[UIView(Internal) _didMoveFromWindow:toWindow:] + 684 19 UIKitCore 0x1142c -[UIView(Internal) _didMoveFromWindow:toWindow:] + 684 20 UIKitCore 0x1142c -[UIView(Internal) _didMoveFromWindow:toWindow:] + 684 21 UIKitCore 0x10eb4 __45-[UIView(Hierarchy) _postMovedFromSuperview:]_block_invoke + 124 22 CoreAutoLayout 0xa514 -[NSISEngine withBehaviors:performModifications:] + 84 23 UIKitCore 0x10ddc -[UIView _postMovedFromSuperview:] + 504 24 UIKitCore 0xfa24 -[UIView(Internal) _addSubview:positioned:relativeTo:] + 2200 25 UIKitCore 0x7a63b8 __53-[_UINavigationParallaxTransition animateTransition:]_block_invoke_2 + 1252 26 UIKitCore 0x41a70 +[UIView(Animation) performWithoutAnimation:] + 76 27 UIKitCore 0x7a5e84 __53-[_UINavigationParallaxTransition animateTransition:]_block_invoke + 240 28 UIKitCore 0x12749c +[UIView _performBlockDelayingTriggeringResponderEvents:forScene:] + 176 29 UIKitCore 0x7a5990 -[_UINavigationParallaxTransition animateTransition:] + 952 30 UIKitCore 0x291098 ___UIViewControllerTransitioningRunCustomTransition_block_invoke_3 + 52 31 UIKitCore 0x29100c +[UIKeyboardSceneDelegate _pinInputViewsForKeyboardSceneDelegate:onBehalfOfResponder:duringBlock:] + 96 32 UIKitCore 0x290f70 ___UIViewControllerTransitioningRunCustomTransition_block_invoke_2 + 196 33 UIKitCore 0x1d8c8c +[UIView(Animation) _setAlongsideAnimations:toRunByEndOfBlock:] + 180 34 UIKitCore 0x1d851c _UIViewControllerTransitioningRunCustomTransition + 484 35 UIKitCore 0x6f5a84 -[UINavigationController _startCustomTransition:] + 3292 36 UIKitCore 0x1182a8 -[UINavigationController _startDeferredTransitionIfNeeded:] + 496 37 UIKitCore 0x1179a0 -[UINavigationController __viewWillLayoutSubviews] + 96 38 UIKitCore 0x117904 -[UILayoutContainerView layoutSubviews] + 172 39 UIKitCore 0x3297c -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 1528 40 QuartzCore 0x66aa8 CA::Layer::layout_if_needed(CA::Transaction*) + 500 41 QuartzCore 0x66630 CA::Layer::layout_and_display_if_needed(CA::Transaction*) + 144 42 QuartzCore 0x6cb60 CA::Context::commit_transaction(CA::Transaction*, double, double*) + 464 43 QuartzCore 0x65e3c CA::Transaction::commit() + 648 44 QuartzCore 0x65ae4 CA::Transaction::flush_as_runloop_observer(bool) + 88 45 CoreFoundation 0x3583c __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 36 46 CoreFoundation 0x34244 __CFRunLoopDoObservers + 548 47 CoreFoundation 0x33960 __CFRunLoopRun + 1028 48 CoreFoundation 0x33478 CFRunLoopRunSpecific + 608 49 GraphicsServices 0x34f8 GSEventRunModal + 164 50 UIKitCore 0x22c62c -[UIApplication _run] + 888 51 UIKitCore 0x22bc68 UIApplicationMain + 340 52 MyApp 0x46a040 main + 44 (AppDelegate.swift:44) 53 ??? 0x1c8d52dcc (缺少) Questions / Requests Recommended patterns for in-app language switching (LTR ⇄ RTL) to avoid direction/constraint races during animations? For example: Should semantic direction be applied to the window/root view controller only? Should we avoid rebuilding root during an active transition? Any suggested synchronization (e.g., wait for transitions to finish) or APIs to call after rebuilding?

In third-party keyboard app, the app is crashed when call [[UIInputViewController textDocumentProxy] keyboardAppearance]. Environment) iOS 26 crash dump call stack Thread 0 Crashed: 0 libobjc.A.dylib 0x0000000198433008 objc_msgSend + 8 1 UIKitCore 0x00000001a1cea570 -[_UITextDocumentInterface _controllerState] + 68 2 UIKitCore 0x00000001a1ceaef0 -[_UITextDocumentInterface documentIdentifier] + 20 3 ThirtPartyKeyboardApp 0x0000000104aad190 -[NKBKeyboardViewController _updateThemeCenterAppearanceModeIfNeeds] + 56 (NKBKeyboardViewController.m:164)

I have an app where I create UIToolbars and add them to UIViews programatically. I've never used autolayout for anything, I've never assigned any constraints to anything, etc. This worked fine pre-iOS 26. Now I'm trying to build for iOS 26 (liquid glass) and my toolbars are spamming my debug pane with hundreds of lines of autolayout warnings. Here are some key phrases from the warnings: Unable to simultaneously satisfy constraints. Will attempt to recover by breaking constraint Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger. (Note: If you're seeing NSAutoresizingMaskLayoutConstraints that you don't understand, refer to the documentation for the UIView property translatesAutoresizingMaskIntoConstraints) Does anybody know what happened and how I can get it to stop? The way things are, I can't use the debug pane for anything because of this spam.

Noticed when using .glassEffect within NavigationStack gives different result when interacting with view. When it is not in NavigationStack, when view pressed, glassEffect is within Capsule, clipped. But when used with NavigationStack, pressing view gives additional background effect in rectangle form. In image can see this effect, it is subtle but in other scenarios its much more visible. Is there a way how to use glassEffect without rectangle appearing in NavigationStack? Here is full code for this example. struct ExampleGlass: View { var body: some View { GlassObject() .padding() .background(.blue) } } struct ExampleGlassNavStack: View { var body: some View { NavigationStack { GlassObject() .padding() .background(.blue) } } } struct GlassObject: View { var body: some View { Capsule() .frame(height: 150) .glassEffect(.clear.interactive()) } } #Preview { ExampleGlass() ExampleGlassNavStack() }

The ScreenCaptureKit sample application (https://developer.apple.com/documentation/screencapturekit/capturing-screen-content-in-macos) uses a filter initially set to capture content from the selected display, excluding only the sample application, and excepting no windows: private var contentFilter: SCContentFilter { var filter: SCContentFilter switch captureType { case .display: guard let display = selectedDisplay else { fatalError("No display selected.") } var excludedApps = [SCRunningApplication]() // If a user chooses to exclude the app from the stream, // exclude it by matching its bundle identifier. if isAppExcluded { excludedApps = availableApps.filter { app in Bundle.main.bundleIdentifier == app.bundleIdentifier } } // Create a content filter with excluded apps. filter = SCContentFilter(display: display, excludingApplications: excludedApps, exceptingWindows: []) ....... return filter However, if another application uses the legacy NSWindowSharingType NSWindowSharingNone attribute, that application is initially not included in the captured stream. Only by toggling either the "Capture Type" or "Exclude sample from stream" checkbox does the initially hidden application become visible. Additionally, if the "Stop Capture" button is used followed by "Start Capture", the application using the legacy NSWindowSharingType NSWindowSharingNone attribute is once again hidden from the stream, and is only made visible by toggling either the "Capture Type" or "Exclude sample from stream" checkbox. Does some additional filter element or other SCStream configuration need to be included to verify that all applications, regardless of NSWindowSharingType, are captured using ScreenCaptureKit without requiring manual user interaction/filter refreshing? It seems odd that QuickTime screen recording (using ScreenCaptureKit) immediately captures an application using the NSWindowSharingNone attribute while the ScreenCaptureKit sample application linked above does not. See images below showing the stream preview before and after toggling the "Capture Type" or "Exclude sample from stream" checkbox. Images were taken from a QuickTime screen recording during testing.

When I run my Mac Catalyst app I'm getting unacceptable performance when resizing the window. Window resizing is very unresponsive/laggy. Configuration: The root view controller is a UISplitViewController (three pane split using UISplitViewControllerStyleTripleColumn). Sidebar is configured. It's using a UICollectionView sidebar style (so it looks like NSOutlineView in AppKit). On initial launch there is no selection and the second and third view controllers in the split have empty placeholder view controllers. At this point window resizing is fine. Now I make a selection in the sidebar. This populates the supplementary view controller with a view controller that uses a UITableView. Now resizing the window performance is awful. Basically this is unusable. When resizing the window a bunch what looks to be Core Animation related logs flood the console during window resize: cannot add handler to 3 from 1 - dropping Library: QuartzCore | Subsystem: com.apple.coreanimation Now if I go to my app's Info.plist and add: UIDesignRequiresCompatibility entry with a value of TRUE and follow the same steps described above window resizing works as expected and I do not experience performance issues. Also with UIDesignRequiresCompatibility there is no "cannot add handlers" error logs flooding the console on window resize.

My app (FindAnyFile) provides a Finder-like interface in which it also offers a QuickLook preview command, which invokes [[QLPreviewPanel sharedPreviewPanel] makeKeyAndOrderFront:nil]; Now, if it shows .abcdp files, it often, but not always, crashes. This has been happening for many macOS versions, at least since 10.15, up to 26.1. Also, it does not seem to matter which SDK/Xcode I build with, as I used several and all versions lead to the crash. The issue rather appears to be inside the QLplugin for the AB file (ABCardCollectionView etc.). I am able to trace this crash in Xcode. There are a LOT of errors and warnings coming up, and eventually the qlplugin throws an ObjC exception which in turn brings down my entire app (and here I thought that the XPC system was designed to expressly avoid such crashes). Possibly significant errors are: CNAccountCollectionUpdateWatcher 0x6000025cf800: Update event received, but store registration failed. This event will be handled, but the behavior is undefined. Error using remote object proxy when fetchAnonymousXPCEndpoint: Error Domain=NSCocoaErrorDomain Code=4097 "connection to service named com.apple.telephonyutilities.callservicesdaemon.callstatecontroller" UserInfo={NSDebugDescription=connection to service named com.apple.telephonyutilities.callservicesdaemon.callstatecontroller} connection to service named com.apple.coreduetd.people … CNPropertyNotFetchedException: A property was not requested when contact was fetched. I've attached the (mostly) complete console output from such a debug run. I have also an open bug report regarding this kind of crash (back then I was not able to reproduce it myself): FB15553847 Also, when I "Quick Look" the same file in Finder, I get a "Preview not permitted" for the same items that crash in my app. If I copy the same items to the Desktop, then Finder can QL them and my app doesn't crash when viewing the item on the Desktop. So, the crash only happens with the items inside ~/Library/Application Support/AddressBook/Sources/…/Metadata/. Now, here is the weirdest part: You might think: So, if the Finder shows "Preview not permitted", then my app trying to view those items is the result of that condition (even if that's not supposed to crash). However: I have a clean 26.1 install (in an Apple ARM VM) where Finder also says "Preview not permitted" for these items in the user's Library/AB/Metadata folder, but my app can QL those items without crashing! Also, I have one user who uses 26.1 and gets the crash with files in the same location. So, the "Preview not permitted" is probably not the cause of this crash, though it's suspicious that a user gets this at all - why can't a user QL the abcdp files in the Metadata folder but when copied to the Desktop, QL works? You'd think that Finder has the necessary entitlements to access the AB, or doesn't it? Of course, my app has permission enabled under Privacy & Security / Contacts (if it's disabled, then the app can't show anything but will also not crash). And it has the "Address Book" entitlement. Would be nice if this could be looked into and eventually be fixed. Alternatively, I'd welcome any suggestions on how to prevent my app from crashing if the qlplugin throws. But if you look at the stack trace you'll see that there's no method of my own app involved where I could insert an exception catcher. I added code to my previewItemURL delegate method to make sure the NSURL item is readable, and it is, even Of course, apart from the issue with .abcdp files, the QL operation in my app works flawlessly, i.e. I have never received any other crash reports relating to any other QL plugins. QuickLook for AddressBook crash messages

I want to create GIF file and then use UIImage to it.

UITabBarAppearance *appearance = UITabBarAppearance.alloc.init; [appearance.stackedLayoutAppearance.normal setTitleTextAttributes:@{NSForegroundColorAttributeName:UIColor.redColor}]; [appearance.stackedLayoutAppearance.selected setTitleTextAttributes:@{NSForegroundColorAttributeName:UIColor.purpleColor}]; appearance.backgroundColor = UIColor.redColor; self.tabBar.standardAppearance = appearance; self.tabBar.scrollEdgeAppearance = appearance; How to resolve?

We are seeing this crash across several different iPad models, all of them running iPadOS 26.1. The crash did not occur before, and it started appearing consistently over the past month. This suggests that the issue may be related to changes introduced in recent iPadOS 26.1 builds. Crash Log: 0 CoreFoundation 0xc5994 (缺少 UUID b4a0233bf37d3ef6a977e4f36199c5a4) 1 libobjc.A.dylib 0x31814 objc_exception_throw 2 Foundation 0x9465a4 (缺少 UUID 218da4dc727a3341b59e8fdb39a2d7c4) 3 Foundation 0x9469c8 (缺少 UUID 218da4dc727a3341b59e8fdb39a2d7c4) 4 Foundation 0x9468e0 (缺少 UUID 218da4dc727a3341b59e8fdb39a2d7c4) 5 PencilKit 0x100894 -[PKTextEffectsWindowObserver dealloc] 6 UIKitCore 0x22b28 (缺少 UUID a0e1cefbfd0136f9b82351b092e4dbc6) 7 UIKitCore 0x19918b8 (缺少 UUID a0e1cefbfd0136f9b82351b092e4dbc6) 8 PencilKit 0xe8448 -[PKTextInputInteraction willMoveToView:] 9 UIKitCore 0x22b1c (缺少 UUID a0e1cefbfd0136f9b82351b092e4dbc6) 10 UIKitCore 0x19918b8 (缺少 UUID a0e1cefbfd0136f9b82351b092e4dbc6) 11 UIKitCore 0x171e094 (缺少 UUID a0e1cefbfd0136f9b82351b092e4dbc6) 12 UIKitCore 0xc896a8 (缺少 UUID a0e1cefbfd0136f9b82351b092e4dbc6) 13 UIKitCore 0xc89d70 (缺少 UUID a0e1cefbfd0136f9b82351b092e4dbc6) 14 UIKitCore 0xc89c10 (缺少 UUID a0e1cefbfd0136f9b82351b092e4dbc6) 15 CoreFoundation 0x14f78 (缺少 UUID b4a0233bf37d3ef6a977e4f36199c5a4) 16 CoreFoundation 0x17fc2c (缺少 UUID b4a0233bf37d3ef6a977e4f36199c5a4) 17 UIKitCore 0xc89a44 (缺少 UUID a0e1cefbfd0136f9b82351b092e4dbc6) 18 UIKitCore 0xc8a53c (缺少 UUID a0e1cefbfd0136f9b82351b092e4dbc6) 19 UIKitCore 0xc8a638 (缺少 UUID a0e1cefbfd0136f9b82351b092e4dbc6) 20 UIKitCore 0xb9701c (缺少 UUID a0e1cefbfd0136f9b82351b092e4dbc6) 21 UIKitCore 0xb96cd0 (缺少 UUID a0e1cefbfd0136f9b82351b092e4dbc6) 22 UIKitCore 0xba0720 (缺少 UUID a0e1cefbfd0136f9b82351b092e4dbc6) 23 UIKitCore 0xb9a608 (缺少 UUID a0e1cefbfd0136f9b82351b092e4dbc6) 24 UIKitCore 0xca4fec (缺少 UUID a0e1cefbfd0136f9b82351b092e4dbc6) 25 UIKitCore 0x90878 (缺少 UUID a0e1cefbfd0136f9b82351b092e4dbc6) 26 UIKitCore 0x907b0 (缺少 UUID a0e1cefbfd0136f9b82351b092e4dbc6) 27 libdispatch.dylib 0x1adc _dispatch_call_block_and_release 28 libdispatch.dylib 0x1b7ec _dispatch_client_callout 29 libdispatch.dylib 0x38b24 _dispatch_main_queue_drain.cold.5 30 libdispatch.dylib 0x10ec8 _dispatch_main_queue_drain 31 libdispatch.dylib 0x10e04 _dispatch_main_queue_callback_4CF 32 CoreFoundation 0x6a2c8 (缺少 UUID b4a0233bf37d3ef6a977e4f36199c5a4) 33 CoreFoundation 0x1db3c (缺少 UUID b4a0233bf37d3ef6a977e4f36199c5a4) 34 CoreFoundation 0x1ca6c (缺少 UUID b4a0233bf37d3ef6a977e4f36199c5a4) 35 GraphicsServices 0x1498 GSEventRunModal 36 UIKitCore 0x9dba4 (缺少 UUID a0e1cefbfd0136f9b82351b092e4dbc6) 37 UIKitCore 0x46a78 (缺少 UUID a0e1cefbfd0136f9b82351b092e4dbc6) 38 ---------- 0xcd20 main + 35 (main.m:35) 39 ??? 0x18a026e28 (缺少) crash_stacktrace.txt

Issue Summary: On iOS 26.0.1 to 26.3, apps using multiple UITextFields for OTP input face a critical issue where the system autofill pastes the entire OTP string into a single text field, usually the focused one, rather than splitting digits across fields. Delegate events like textDidChange: do not trigger consistently on autofill, breaking existing input handling logic. Expected Behavior: OTP autofill should distribute each digit correctly across all OTP UITextFields. Delegate or control events should fire on autofill to enable manual handling. (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string { if (string.length > 1) { // Autofill detected - distribute OTP manually for (int i = 0; i < string.length && i < self.arrayOTPText.count; i++) { UITextField *field = self.arrayOTPText[i]; field.text = [NSString stringWithFormat:@"%c", [string characterAtIndex:i]]; } UITextField *lastField = self.arrayOTPText[string.length - 1]; [lastField becomeFirstResponder]; return NO; } // Handle normal single character or deletion input here return YES; } // // Setup UITextFields - set .oneTimeCode on first field only for (int i = 0; i < self.arrayOTPText.count; i++) { UITextField *field = self.arrayOTPText[i]; field.delegate = self; if (@available(iOS 12.0, *)) { field.textContentType = (i == 0) ? UITextContentTypeOneTimeCode : UITextContentTypeNone; } } What We’ve Tried: Setting textContentType properly. Handling OTP distribution in delegate method. Verifying settings and keyboard use. Testing on multiple iOS 26.x versions. Impact: Major usability degradation during OTP entry. Forces fragile workarounds. Inconsistent autofill reduces user confidence. Request: Request Apple fix OTP autofill to natively support multi-field UITextField OTP input or provide enhanced delegate callbacks for consistent behavior. Did any one face this issue in recent time with iOS 26.0.1 to 26.3 beta version

We have encountered a consistent problem with OTP (One Time Password) autofill on iOS versions 26.0.1 through 26.3. The issue pertains to apps implementing OTP input using multiple UITextFields (often 6 or 7 separate text boxes for each digit). Problem Details: When tapping the OTP autofill suggestion from Messages or supported third-party apps, iOS autofill pastes the entire OTP string into just one UITextField (commonly the second or focused field) rather than distributing digits across the individual text fields. The delegated UITextField methods such as textField:shouldChangeCharactersInRange:replacementString: receive an entire OTP string at once, but the usual event handlers like UIControlEventEditingChanged do not always trigger, breaking existing logic relying on those. This results in the OTP input UI showing incorrect or partial OTP, confusing users and forcing manual re-entry. Many popular apps employing multi-field OTP input UIs face similar autofill malfunctions on iOS 26.x, impacting user experience negatively. Setting textContentType = .oneTimeCode on the first text field alone is insufficient to restore the intended autofill behavior on iOS 26.x. This represents a regression or functional deficiency compared to iOS 15-18 autofill handling patterns, which worked reliably for these multi-field OTP UIs.| Expected Behavior: OTP autofill should either automatically split the filled code into each UITextField or trigger consistent delegate/callback events to enable developers to replicate this behavior manually. textDidChange or equivalent events should fire on autofill updates to reflect text changes correctly in multi-field OTP input. Apple’s OTP autofill system should transparently support or provide clear guidelines for handling multi-field OTP input on iOS 26+. What We’ve Tried: Setting .oneTimeCode content type on only the first UITextField. Handling OTP autofill in delegate methods including shouldChangeCharactersInRange. Manual distribution and custom logic triggered by textDidChange and other callbacks. Confirming all relevant system autofill settings are enabled. Testing on multiple devices and iOS versions (26.0.1 through 26.3). Note: its happen for may apps which have text field with 6 box otp fill

Hi, I'm using a UICollectionViewCell in my project and I can't wrap my head around why cell's UI state isn't changing when selected. This is my code: override func updateConfiguration(using state: UICellConfigurationState) { super.updateConfiguration(using: state) var background = UIBackgroundConfiguration.listGroupedCell().updated(for: state) background.cornerRadius = 25 // Update background based on selection state if state.isSelected { background.backgroundColor = .systemBlue.withAlphaComponent(0.3) background.strokeColor = UIColor.systemBlue background.strokeWidth = 1.5 } else { background.backgroundColor = isHoveredOver ? .hoverHighlightBackground : .background background.strokeColor = UIColor.borderColor background.strokeWidth = 1 } backgroundConfiguration = background } The if block does get executed but it's not working for some reason. On the other hand, the else block works just fine, my cell's background is being highlighted when hovered over, the stroke is showing etc. What am I missing here? Thank you.

Returning to a Mac Catalyst app that I put to the side for awhile..when running it on Xcode 26.1 it crashes at launch with: Assertion failure in -[NSToolbarItemGroupView _layoutWrapperViewsWithAttributes:], NSToolbarItemGroupView.m:599 No attributes were found for item Call stack has a bunch of Autolayout code in AppKit like: [NSWindow(NSConstraintBasedLayoutInternal) _layoutViewTree] + 120 50 AppKit 0x00000001911e8a10 -[NSWindow(NSConstraintBasedLayoutInternal) layoutIfNeeded] + 240 51 UIKitMacHelper 0x00000001a98f293c -[UINSWindow layoutIfNeeded] + 56 A few unnamed symbols mixed in maybe that's that Swiftness beneath the surface. App is just murdered on launch. I assume this is related to using NSToolbarItemGroup when building an NSToolbar... I do see this log out: NSToolbarItemGroup does not support selectionMode. Create the group with one of the class constructors to support selection. Which is an interesting log so I commented out all calls to setSelectionMode: but still the same crash. I do set the groups subitems property directly (I do not use the class constructors as the logging statement above indicates). I have no idea if using the class constructors will workaround this issue or not but I'm not particularly excited about that idea because I have items in the same toolbar group with different actions.

Unable to open mach-O at path: /AppleInternal/Library/BuildRoots/4~B5FIugA1pgyNPFl0-ZGG8fewoBL0-6a_xWhpzsk/Library/Caches/com.apple.xbs/Binaries/RenderBox/install/TempContent/Root/System/Library/PrivateFrameworks/RenderBox.framework/Versions/A/Resources/default.metallib Error:2 This happens only on macOS Sequoia - not on macOS Tahoe. I have got a noticeable amount of lag in the animations of my App where this Warning arises I've tried to isolate the respective animations from the main thread too - still getting the same issue with the lag Is it possible to resolve it, as I want backwards compatibility with my app for the users

In macOS Tahoe, users can tint folders or add symbols. But when trying to access that customized icon in Swift, the system always returns the default folder icon. NSWorkspace.shared.icon(forFile: url.path) try url.resourceValues(forKeys: [.effectiveIconKey]).effectiveIcon try url.resourceValues(forKeys: [.customIconKey]).customIconKey All of these give back the standard folder icon without any of the user-applied customization. So the question is: Is there any API or workaround in Swift to retrieve the actual customized folder icon (including tint and symbol) as displayed in Finder on macOS Tahoe?

Hi everyone, I am encountering an issue where my Live Activity (Dynamic Island) suddenly became invalid and failed to launch. It was working perfectly before, and I haven't modified any code since then. My Environment: Xcode: 26.1.1 Device iOS: 26.1 Testing: I also tested on iOS 18, but the Live Activity fails to start there as well. Here is my code: Live Activity Manager (Start/Update/End): func startLiveActivity() { // Initial static data let attributes = SimpleIslandAttributes(name: "Test Order") // Initial dynamic data let initialContentState = SimpleIslandState(message: "Preparing...") // Adapting for iOS 16.2+ new API (Content) let activityContent = ActivityContent(state: initialContentState, staleDate: nil) do { let activity = try Activity.request( attributes: attributes, content: activityContent, pushType: nil // Set to nil as remote push updates are not needed ) print("Live Activity Started ID: \(activity.id)") } catch { print("Failed to start: \(error.localizedDescription)") } } // 2. Update Live Activity func updateLiveActivity() { Task { let updatedState = SimpleIslandState(message: "Delivering 🚀") let updatedContent = ActivityContent(state: updatedState, staleDate: nil) // Iterate through all active Activities and update them for activity in Activity<SimpleIslandAttributes>.activities { await activity.update(updatedContent) print("Update") } } } // 3. End Live Activity func endLiveActivity() { Task { let finalState = SimpleIslandState(message: "Delivered ✅") let finalContent = ActivityContent(state: finalState, staleDate: nil) for activity in Activity<SimpleIslandAttributes>.activities { // dismissalPolicy: .default (immediate), .after(...) (delayed), .immediate (no animation) await activity.end(finalContent, dismissalPolicy: .default) print("End") } } } The Models (Shared between App and Widget Extension): // 1. Define State (Dynamic data, changes over time, e.g., remaining delivery time) public struct SimpleIslandState: Codable, Hashable { var message: String } // 2. Define Attributes (Static data, constant after start, e.g., Order ID) public struct SimpleIslandAttributes: ActivityAttributes { public typealias ContentState = SimpleIslandState var name: String // e.g., "My Order" } The Widget Code: // // SimpleIslandWidget.swift // ReadyGo // // Created by Tang Yu on 2025/11/19. // import WidgetKit import SwiftUI import ActivityKit struct SimpleIslandWidget: Widget { var body: some WidgetConfiguration { ActivityConfiguration(for: SimpleIslandAttributes.self) { context in // UI shown on the Lock Screen VStack { Text("Lock Screen Notification: \(context.state.message)") } .activityBackgroundTint(Color.cyan) .activitySystemActionForegroundColor(Color.black) } dynamicIsland: { context in // Inside Widget Extension DynamicIsland { // Expanded Region DynamicIslandExpandedRegion(.center) { Text("Test") // Pure text only } } compactLeading: { Text("L") // Pure text only } compactTrailing: { Text("R") // Pure text only } minimal: { Text("M") // Pure text only } } } } Additional Info: This is the minimal code setup I created for testing, but even this basic version is failing. I have set NSSupportsLiveActivities (Supports Live Activities) to YES (true) in the Info.plist for both the Main App and the Widget Extension. Has anyone experienced this? Any help would be appreciated.

I’m experiencing an issue after building the project with Xcode 26.1.1. In my code, I have a UICollectionView that contains multiple cells, and each cell has a slider. When I move a slider in one cell, sliders in other cells also move. This issue does not occur in Xcode 16.4 – it works perfectly there. If anyone has a solution or knows if this is related to Xcode 26 changes, please let me know. Thanks!

This is a problem from Beta 1, but since there is no fix yet in Beta 3, I'd like to raise it. The app is built with macCatalyst, and we have pretty simple tab bar controller setup: viewController = UITabBarController() viewController.tabBar.tintColor = .buttonForegroundColor importWorkflow = ModelImportWorkflow( userInterfaceIdiom: userInterfaceIdiom, workspace: workspace) mergeWorkflow = ModelMergeWorkflow(userInterfaceIdiom: userInterfaceIdiom, workspace: workspace) listWorkflow = ModelListWorkflow(workspace: workspace, userInterfaceIdiom: userInterfaceIdiom) viewController.viewControllers = [ listWorkflow.viewControllable, importWorkflow.viewControllable, mergeWorkflow.viewControllable, ] viewController.modalPresentationStyle = .formSheet We don't do any customizations on the tab bar and in Beta 3 (26.2), there is no way to found the tab bar (attached a user reported image). Please advise what's the course of action. Thanks.